Enhancement: duplicated test cases in `RuleTester.test.ts`

[nayounsang]

Before You File a Proposal Please Confirm You Have Done The Following...

• I have searched for related issues and found none that match my proposal.
• I have searched the current rule list and found no rules that match my proposal.
• I have read the FAQ and my problem is not listed.

Relevant Package

rule-tester

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Description

// packages/rule-tester/tests/RuleTester.test.ts
    it('passes with no output', () => {
      expect(() => {
        ruleTester.run('my-rule', rule, {
          invalid: [
            {
              code: 'foo',
              errors: [{ messageId: 'error' }],
            },
          ],
          valid: [],
        });
      }).not.toThrow();
    });

    it('passes with null output', () => {
      expect(() => {
        ruleTester.run('my-rule', rule, {
          invalid: [
            {
              code: 'foo',
              errors: [{ messageId: 'error' }],
            },
          ],
          valid: [],
        });
      }).not.toThrow();
    });

These two test cases have almost the same meaning and are written in exactly the same code.

1. Remove duplicates
   OR
2. If duplication is absolutely necessary, please state in a comment why it is necessary.
   OR
3. write it clearly.

    it('passes with null output', () => {
      expect(() => {
        ruleTester.run('my-rule', rule, {
          invalid: [
            {
              code: 'foo',
              errors: [{ messageId: 'error' }],
              output: null,
            },
          ],
          valid: [],
        });
      }).not.toThrow();
    });

Additional Info

❤
Is this an issue with repo maintainance?